Sagar, RV and Saha, I and Basu, DJ and Kundu, T (2023) Statistics of acoustic emission waveforms in characterizing the fracture process zone in fibre-reinforced cementitious materials under mode I fracture. In: Structural Health Monitoring .
Full text not available from this repository. (Request a copy)Abstract
This article reports on the characteristics of fracture process zone in steel fibre-reinforced concrete (SFRC) under the mode I fracture process using acoustic emission (AE) testing. The generated AE waveforms during mode I fracture process in SFRC were recorded in the laboratory. Using a statistical analysis of AE waveforms, it was observed that as the loading increases, a damage zone consisting of numerous microcracks develops ahead of the predefined notch tip. The location of the generated AE events related to the numerous microcracks were classified into three zones namely (i) major damage, (ii) moderate damage and (iii) low damage. The areas of these regions were evaluated from the distribution of the AE events around the pre-notch. The number of AE events reduced with the increase in the steel fibre content under the same experimental conditions. The major damage zone was located ahead of the notch tip very closely and it comprised of AE events with (i) high peak amplitude, (ii) low information entropy and (iii) longer AE waveform duration. © The Author(s) 2023.
| Item Type: | Journal Article |
|---|---|
| Publication: | Structural Health Monitoring |
| Publisher: | SAGE Publications Ltd |
| Additional Information: | The copyright for this article belongs to SAGE Publications Ltd |
| Keywords: | Acoustic emission testing; Concrete testing; Fiber reinforced materials; Fracture testing; Microcracks; Reinforced concrete; Shotcreting; Steel fibers; Steel testing, Acoustic-emissions; Cementitious materials; Damage zones; Fibre-reinforced; Fracture process; Fracture process zone; In-fiber; Mode I fracture; Steel fiber reinforced concretes; Waveforms, Fracture |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 18 Dec 2023 04:10 |
| Last Modified: | 18 Dec 2023 04:10 |
| URI: | https://eprints.iisc.ac.in/id/eprint/83500 |
Actions (login required)
 |
View Item |
